630.59% is the change from 85 to 621
Calculation steps:
[( 621 - 85 ) ÷ 85] x 100 = 630.59%
Formula
Percentage change = [(621 - 85) / 85] x 100
Subtract the new number by the original number
621 - 85 = 536
536 ÷ 85 = 6.305882352941176
6.305882352941176 x 100 = 630.59%